Lactose intolerance is very common in adults. It is rarely dangerous. Around 30 million American adults have some degree of lactose intolerance by age 20. 1  In Caucasians, lactose intolerance often develops in children older than age 5.  In African Americans, the problem can occur as early as age 2.
The winter flounder is one of five species in the genus Pseudopleuronectes along with the Yellow-striped flounder, Cresthead flounder, Marbled flounder, and Dark flounder. It is the only cogener to inhabit the Atlantic Ocean.
The European flounder, Platichthys flesus, is a flat fish. This species is found in coastal areas of north-west Europe, from the Mediterranean to the Black Sea and south of the Baltic Sea. Flounders breed in a marine environment and eggs develop in pelagic environments. After 5 to 7 days, the larvae hatch in nursery zones close to the coast. They then cross the estuarine environments. The change to juvenile fish takes place in the estuary. Juveniles then head towards the rivers to grow. Once in fresh water, the diet of a flounder is made up of benthic prey, particularly gastropods and chironomid larvae.